1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
// mongo/shell/shell_utils_launcher.h
/*
* Copyright 2010 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#pragma once
#include <boost/filesystem/convenience.hpp>
#include <map>
#include <sstream>
#include <string>
#include <vector>
#include <utility>
#include "mongo/bson/bsonobj.h"
#include "mongo/platform/process_id.h"
#include "mongo/stdx/mutex.h"
namespace mongo {
class Scope;
namespace shell_utils {
// Scoped management of mongo program instances. Simple implementation:
// destructor kills all mongod instances created by the shell.
struct MongoProgramScope {
MongoProgramScope() {} // Avoid 'unused variable' warning.
~MongoProgramScope();
};
void KillMongoProgramInstances();
void goingAwaySoon();
void installShellUtilsLauncher(Scope& scope);
/** Record log lines from concurrent programs. All public members are thread safe. */
class ProgramOutputMultiplexer {
public:
void appendLine(int port, ProcessId pid, const char* line);
/** @return up to 100000 characters of the most recent log output. */
std::string str() const;
void clear();
private:
std::stringstream _buffer;
};
/**
* A registry of spawned programs that are identified by a bound port or else a system pid.
* All public member functions are thread safe.
*
* TODO: Clean this up to make the semantics more consistent between pids and ports
*/
class ProgramRegistry {
public:
bool isPortRegistered(int port) const;
/** @return pid for a registered port. */
ProcessId pidForPort(int port) const;
/** @return port (-1 if doesn't exist) for a registered pid. */
int portForPid(ProcessId pid) const;
/** Register an unregistered port. */
void registerPort(int port, ProcessId pid, int output);
void deletePort(int port);
void getRegisteredPorts(std::vector<int>& ports);
bool isPidRegistered(ProcessId pid) const;
/** Register an unregistered pid. */
void registerPid(ProcessId pid, int output);
void deletePid(ProcessId pid);
void getRegisteredPids(std::vector<ProcessId>& pids);
private:
std::map<int, std::pair<ProcessId, int>> _ports;
std::map<ProcessId, int> _pids;
mutable stdx::recursive_mutex _mutex;
#ifdef _WIN32
public:
std::map<ProcessId, HANDLE> _handles;
#endif
};
/** Helper class for launching a program and logging its output. */
class ProgramRunner {
public:
/** @param args The program's arguments, including the program name. */
ProgramRunner(const BSONObj& args);
/** Launch the program. */
void start();
/** Continuously read the program's output, generally from a special purpose thread. */
void operator()();
ProcessId pid() const {
return _pid;
}
int port() const {
return _port;
}
private:
boost::filesystem::path findProgram(const std::string& prog);
void launchProcess(int child_stdout);
std::vector<std::string> _argv;
int _port;
int _pipe;
ProcessId _pid;
};
}
}
|
